Descender apparatus



FIG. 1 is a front and right side perspective view of a descender apparatus showing my new design;

FIG. 2 is a right side elevation thereof;

FIG. 3 is a left side view of the descender apparatus;

FIG. 4 is a front view of the descender apparatus; and,

FIG. 5 is a top plan view thereof. 

The ornamental design for a descender apparatus, as shown and described. 